Lathe



April 21, 1931. G. T. WILLIAMS LATHE Filed-oct. 17,

1928 2 Sheets-Sheet 1 ENTR. Grams 7T WML/ms ATTORNEYS.

April 21, 1931. G. T. WILLIAMS A LATHE Filed oct. 17, 1928 2 Sheets-Sheet 2 ATTORNEYS. I

Patented Apr. 21, 191751 s Y UNITED. STA-TES PATENT ori-ica GEORGE T. WILLIAMS, orvAxRoN, 01110` Y i LATHE Y Application led October 17, 1928. Serial No. 313,015.

rllhis invention relatestoimprove'ments in -16 supporting thereon a tool assembly `17. lathes,- and particularly to'lathes for'redress- Adjustment of the plate16 longitudinally ingtenpins. of the work may be arrangedV for by pro- Aparticular purpose of the invention is to vision of'a screw 18 engage'able through a improve upon devices of this character by the threaded aperture in a lug 19 extended down 5. provision for cooperation with a lathe of a through a slot in plate 10, the screw extendsingle dressing Ytool constructed, mounted ing through the channel inthe bed plate and and guided with relation to the work to perbeing journaled thereon and operable by a form allv oi the necessary redressing opercrank 20. ations kincluding redressin'g thev base7 re- This plate 16 with the parts that it carries 60 dressing the surface of' the pin adjacentthe constitutes a removable unit including a tool baseandk redressing the counter bore in the and means for controlling its movements, base of the pin. the tool assembly comprising a bracket piv- The foregoing and other purposes areatoted on the adjustable plate 16 at 21 and Cil tained in the device illustrated inthe accomformed with a groove 22 in its upper surface 'G5 panying dra-Winge and described below. Itis in which is slidably mounted a. tool carrier toy be understood that the invention is not 23, the carrier 23 being retained in groove 22 limited to the specific Jform thereof shown by a strip 24 secured on the upper side of the and described. bracket at one side of the groove. The carrier Of the accompanying drawings, 23 has a suitable redressing tool 25 mounted 70 Figure 1 is a plan of apparatus embodythereon .and is operable by a handle 26 thereing the invention; v on. A handle 27 is provided for operating Figure 2 is a front elevation thereof; the bracket 17. A cam plate 28 is also secured ,A Figure 3 is a'Y section through the base end to the carrier 23 on the side which is adjacent ofV a tenpin showing the center engaged the work when the tool unit is swung to the therein and indicating the three operations left dotted line position shown in Figure 1. of the dressing tool thereon, the tool being The pivotal point 21 for bracket 17 is so indicated in dotted lines in three operative positioned on the adjustableplate 16 .as to be positions; i adjusted into alignment with a. vertical n -30 Figure 4: is, a section on line 4 4 0f Figtangent to the pin 13 at the base thereof 30 ure 2; y whereby when a redressing cutis taken across Figure 5y is an enlargedv plan 0f the tool said base and down the conical 'surface of the unit; pin to the base, the area of the base will be Figure 6is an elevation thereof; that required or set up as a standard for 5 Figure 7 is a Section 0n line 0f FigtenplIlS .and the gIOOVe 22 1S S0 pllCeCl Q11 the 85 i ure 5; and bracket thatthe cutting edgeof the tool will Figure 8 is a section on line 8 8 0f Figpe moved .along aline intersecting said pivot ure 5. lne. v

Referring to the drawings, the numeral 10 For making the dressing cut across the 40 designates a bed plate preferably eompriebase of the pin bracket 17 is arranged to be ing an inverted channel having on one end swung to the full line position shown in Figthereo a motor 11 for driving a suitable ure 1 and heldin that position by one hand chuck 12 for receiving the head of a. tenpin while the tool is actuated across the base of indicated at 13, the bed plate 10 having the pin with the other. 45 thereon at its other end a center 14 for en- AV stud 29`is arranged on plate 16 to be en- 9 gaging in the usual central aperture in the gaged by cam 28 when the'tool is used for base of a pin such as 13 and adjustablyV dressing down the conical surface of the pin mounted in a bracket 15 in any suitable way. lf3 to the base, theedge 28au of the cam being A plate 16 is mounted on bed plate 10 for at such an angle that as ythe tool is moved adjustment longitudinally thereof7 said plate .along toward the base of the pin with one lo@ hand and the bracket 17 is held by the other hand to hold the cam against stud 29, the resultant movement of the tool will be along' a curved path to the base of the pin corresponding to the shape of this portion of the pm.

To redress the counter bore of the ein, plate 16 is adjusted by screw 1S to bring the ivot point 21 into alignment with the conical surface of the counter bore and a stud is provided at 30 on plate i6 against which bracket 17 is held by one hand position the tool guiding grooif'e E22 in alignn'ient with the surface of the counter bore while the tool is moved therein.

The operation of the apparatus will be understood from the foregoing description, the redressing cuts preferably being taken in the order named while the work is continuously driven and the resulting redressed ten-- pin being of the required or standard base dimensions.

Obviously modifications of this invention may be resorted to without departing 'from the spirit thereof or the scope ci the appended claims.

What is claimed is l. A device for redressing tenpins comprising a lathe for receiving and rotating a pin therein, and a tool unit associated therewith, said unit including a plate, a pivot thereon, a bracket, said bracket being swingably mounted on said pivot, a tool carrier slidable on said bracket, a tool mounted on the carrier, the direction of movement ot the carrier on the bracket intersecting with the pivot axis of the bracket, said pivot being adapted to be positioned in alignment with a tangent to the periphery of the pin at its base, a. cani on the carrier and a stud on said plate adapted to be engaged by said cam whereby movement of the carrier on the bracket' transversely of the pin will move the tool across the base of said pin and movement of the carrier on the bracket loirg'itudinall;7 of the pin with the cam held engaged with the stud will move the tool over a path corresponding to the shape 0f the lower end of the 1pin to redress this portion of the pin and to redress the pin to a predetermined base area, said pivot being adjustable longitudinally oi the pin into alignment with the surface of the counter bore of the pin whereby the tool may also be operated to redress the counter bore.

2. The combination in a lathe, including means for supporting and rotating the work, of tool means associated therewith for operation on the work, said tool means including a pivoted bracket, a tool slidable on the bracket, a fixed stud on the lathe, cam means fixed in relation to said tool and cooperating with said stu-d for shifting the bracket when the tool is moved thereon so that the tool will be moved along a predetermined path corresponding to the desired shape of the Work.

3. The combination in a lathe, including means for supporting and rotating the work, of tool means associated therewith for operation on the work, said means including a pivoted bracket, a tool slidingly supported by the bracket, a cam plate carried by said tool, and means cooperating with said cam to swing the bracket when the tool is moved..

4. In a lathe, a plate adapted to have longitudinal movement with respect to the axis of the lathe, a bracket pivoted to said plate, a tool slidingly supported in said bracket, and means for moving the bracket, said means being operated by the movement of the tool in the bracket.

5. In a lathe, a plate adapted to have longitudinal movement with respect to the axis of the lathe, a bracket pivoted to said plate, a tool slidingly supported in said bracket, and means operated by the movement of the tool for swinging the bracket, said means including a cam fixed in relation to said tool, and a stud on said plate cooperating with said cam.

6. A device for redressing tenpins com prising a lathe for receiving and rotating a pin therein, and a tool unit associated therewith, said unit including a plate, a bracket, a pivot on said plate upon which said bracket is swingably mounted, a tool carrier slidable on said bracket, a tool mounted on the carrier, the direction of movement of the carrier on the bracket intersecting with the pivot axis of the bracket, said pivot being adapted to be positioned in alignment with a tangent to the periphery of the pin at its base, a cam on the carrier and a stud on the plate which is adapted to be engaged by said cam whereby movement of the carrier on the bracket transversely of the pin will move the tool across the base of said pin and movement of the carrier on the bracket longitudinally of the pin with the cam held engaged with the stud will move the tool over a path corresponding to the shape of the lower end of the pin to redress this portion of the pin and to redress the pin to a predetermined base area.

GEORGE Ti WILLIAMS. 

